const Koa = require('koa')
const app = new Koa()
const views = require('koa-views')
const json = require('koa-json')
const onerror = require('koa-onerror')
const bodyparser = require('koa-bodyparser')
const logger = require('koa-logger')
// 跨域
const cors = require('koa2-cors')
const index = require('./routes/index')
const checkToken = require('./middlewares/checkTokenMiddleware')
const MongoStore = require('connect-mongo');
const { DBHOST, DBPORT, DBNAME } = require('./config/config');

// 跨域
app.use(cors())
// error handler
onerror(app)

MongoStore.create({
  mongoUrl: `mongodb://${DBHOST}:${DBPORT}/${DBNAME}`
})
// middlewares
app.use(bodyparser({
  enableTypes: ['json', 'form', 'text']
}))
app.use(checkToken)

app.use(json())
app.use(logger())
app.use(require('koa-static')(__dirname + '/public'))

app.use(views(__dirname + '/views', {
  extension: 'ejs'
}))

// logger
app.use(async (ctx, next) => {
  const start = new Date()
  await next()
  const ms = new Date() - start
  // console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
})

// routes
app.use(index.routes(), index.allowedMethods())

// error-handling
app.on('error', (err, ctx) => {
  console.error('server error', err, ctx)
});
module.exports = app
